I recently bought a Nokia 5800XM. Some installed software will prompt for signature and certificate. I don't know what that means. If you have any questions, please help me answer them.

In order to protect the security of mobile phones, Nokia often installs personal mobile phone signature software.

It is this software that only your mobile phone can use, and other mobile phones can't install it.

Software in forums or online is shared by others and can only be installed in your mobile phone.

These softwares are all signed by other people's mobile phones, so if you want to install all your mobile phones, you have to sign this installation package.

Go to Zhongguancun mobile phone network or Saipan forum to apply for a certificate. The website will help you make a certificate and signature tool.

After you have done it, download it to your own computer to install the downloaded installation package, sign it with your own signature tool, and then install it, so that there will be no signature or certificate errors, and you can install it in your mobile phone.

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